感谢您为您的所有答复。

Thank You for all your replies.

code：

  Response.Cache.SetCacheability(HttpCacheability.NoCache);
  Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
  Response.Cache.SetNoStore();
  Response.AppendHeader("Pragma", "no-cache");

我已经使用页面加载事件此code。其工作罚款。

i have used this code in page load event. Its working fine.